Fluke-biomedical 451P User Manual download pdf (Page 22)

451P

Operators Manual

Self Test

When the Survey Meter is first turned on, it runs through a functional self-test

procedure. During this self-test, the firmware version of the Survey Meter is

displayed.

 Warning

For safe operation and maintenance of the product, note the

chamber bias from the self-test. If chamber bias is LO, the

Product cannot measure high radiation rates accurately. The

Product requires service, contact Fluke.

If the Survey Meter passes the self-test, it goes into the normal operating mode.

If the Survey Meter fails the self-test, it remains locked with the firmware revision

displayed. Contact Fluke for corrective action. See the How to Contact Fluke

section.

Installation

The Survey Meter periodically tests for input at its RS-232 port. When an RS-232

signal is detected, the Survey Meter sends test signals using its sending device

and, if RS-232 is present and operational, the Survey Meter enters into the

communications mode. The Survey Meter display clears and the letters “CO”

display as an indication that the Survey Meter is in the communications mode.

The Survey Meter is compatible with a CRT or printing terminal that has a

standard RS-232 connector and a 1200-baud rate. A computer with a modem or

terminal emulator can be used in place of the terminal. Set up the terminal or

computer for a 1200 baud, 7 data bits, no parity bit, and 1 stop bits. To establish

communications:

1. Attach the RS-232 cable assembly to the back of the Survey Meter.

2. When “CO” appears on the Survey Meter display, press the computer or

terminal spacebar.

3. If the Survey Meter displays the “CO” message, but there is no response at

the terminal press the spacebar twice.

If there is a problem getting the communications message (CO) to be displayed

on the Survey Meter:

1. Be sure the computer communication port is active. The Survey Meter

communication transmitter/RCR pair is active when it detects a negative mark

voltage at the receiver input. (CO) then appears on the Survey Meter display.

2. Press space bar twice.

If there is still a problem, contact Fluke for further instructions. See the How to

Contact Fluke section in this manual.

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Fluke-biomedical 451P User Manual Page 22